Measurement and modeling of coupled magnetic hysteresis and magnetostrictive properties in core silicon steel
There is lots of rotational magnetic flux in transformer cores or motor cores.The hysteresis and magnetos-trictive properties of silicon steels of core under rotational magnetization will increase the core loss and vibration de-formation.In order to model the coupled hysteresis and magnetostrictive properties in the core silicon steel effective-ly,based on experimental data,this paper proposes that the eddy current loss and abnormal loss of electrical steel sheet under rotational magnetization are introduced into the energy balance formula of traditional Jiles-Atherton hys-teresis model to characterize the rotational hysteresis characteristics of electrical steel sheet.At the same time,based on the nonlinear loop curve relationship between magnetostriction and magnetization,the first-order inertial magnetostrictive model under rotational magnetization is established.The magnetization intensity characterized by the hysteresis model is mapped to the magnetostrictive model,and the coupling relationship between hysteresis and magnetostrictive characteristics is established.Finally,the effectiveness of the proposed model is verified by experi-ment.The results show that the proposed coupling model can effectively characterize the rotational magnetic proper-ties of electrical steel sheets,and provide a reference for the optimization design of high-quality electrical products.
rotational magnetizationJiles-Atherton hysteresis modelmagnetostrictive characteristicscoupling model
NETL
NSTL
万方数据
维普
